For what I received I passed on to you as of first importance: that Christ died for our sins according to the Scriptures, that he was buried, that he was raised on the third day according to the Scriptures, (1 Corinthians 15:3-4)
Jesus died and resurrected, and it's historical fact!
That means Jesus is not ordinary person, but He is God!
Jesus is God, who created us, so He owns us. He is our Lord.
So sin is not believing Jesus Christ as my Lord.
Now God commands us to repent of sin of living as my own master.
God has paid the price for our sins by the blood of Jesus Christ.
To whom believed Jesus Christ as their Lord and united with Jesus, Holy Spirit comes to him.
When Holy Spirit comes, God will work in you to be witnesses unto the end of the world.
Amen!